Fix Hive race for CTAS statistics with IF NOT EXISTS#12895
Merged
electrum merged 1 commit intotrinodb:masterfrom Jul 20, 2022
Merged
Fix Hive race for CTAS statistics with IF NOT EXISTS#12895electrum merged 1 commit intotrinodb:masterfrom
electrum merged 1 commit intotrinodb:masterfrom
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Previously, concurrent CTAS IF NOT EXISTS queries for a non-existent table would all try to update statistics for the table when the query completed, even if they were not the query that created the table. This could result in incorrect statistics if the queries were different or non-deterministic, failures with the Glue metastore due to concurrency errors, etc.
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do we have same problem in Delta? |
Member
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cc @alexjo2144 |
dain
approved these changes
Jul 20, 2022
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Description
Previously, concurrent CTAS IF NOT EXISTS queries for a non-existent
table would all try to update statistics for the table when the query
completed, even if they were not the query that created the table.
This could result in incorrect statistics if the queries were
different or non-deterministic, failures with the Glue metastore due
to concurrency errors, etc.
Documentation
(x) No documentation is needed.
Release notes
(x) Release notes entries required with the following suggested text: